Just looking at a Digital Ocean SSD performance test here http://www.itekhost.net/digitalocean-performance-benchmarks/

Decided to run my own on my Rackspace "1 GB Performance" VPS

The DO benchmark gave 355MB/s note the performance of the Rackspace VPS:

dd if=/dev/zero of=/tmp/output bs=1M count=1K; rm -f /tmp/output
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 2.30563 s, 466 MB/s